package examples;

/**
 * Created by huhx on 2017-06-08.
 */
public class ClientService {
    private static ClientService clientService = new ClientService();

    private ClientService() {
    }

    public static ClientService createInstance() {
        return clientService;
    }

    public void sayHello() {
        System.out.println("hello world.");
    }
}
